iOS 10 public beta arrives today, and this is what you can do with it

Apple's newest version of its mobile software iOS becomes available today for a public test drive. Is the beta for iOS 10 worth it? I've been using it for a long weekend, with a preloaded version on an iPhone 6S provided by Apple. As always, going with a beta OS is a bit of a risky journey on your everyday phone -- if you're curious, read Apple's FAQ and sign up, but I recommend you do it on a secondary device. That being said, it feels largely familiar at first, or second, or third use.